Abstract：A retrospective analysis was performed for the clinical data of four children with Epstein-Barr virus (EBV)-related acute liver failure. There were two boys and two girls with a median age of 10 months (range 8.5-44 months). Of the four children, three were diagnosed with infectious mononucleosis (IM), among whom two met the diagnostic criteria of hemophagocytic lymphohistiocytosis (HLH), and one was diagnosed with past EBV infection. All the children had positive EBV DNA in blood and all had pyrexia, hepatomegaly, and jaundice on admission. Three children had the symptom of splenomegaly, ascites, or vomiting. Two children had enlargement of cervical lymph nodes, skin rash, or pleural effusion. One child had gastrointestinal bleeding or stage 2 hepatic encephalopathy. All the children had an abnormal lymphocyte count of < 10%, and only one child had leukocytosis and thrombocytopenia. Among the four children, alanine aminotransferase level increased by 10-100 times; total bilirubin level increased by 3-5 times; lactate dehydrogenase level increased by many 10 times; prothrombin time prolonged significantly. All the children were given antiviral therapy with intravenously injected acyclovir or ganciclovir, as well as hepatocyte growth factor to promote hepatocyte growth and hormone to alleviate inflammatory response. Two children were given plasma exchange in addition, among whom one was given the combination of continuous venovenous hemodiafiltration. Two children with HLH were given chemotherapy according to the HLH-2004 regimen. Three children survived, and one child with HLH died of multiple organ failure. It is concluded that EBV infection can cause acute liver failure and that early use of multimodality therapy including blood purification may be beneficial for prognosis in these children.
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